What was the name of the ancient princess Wang Hao?

The princess and the prince are called Wang Hao's aunt; The princess called princess royal her sister, Otome her sister and Taigong her aunt. The princess calls other concubines with higher rank than the princess's elder sister, princesses with lower rank than the princess's younger sister, toffee aunts and empress dowager. As for others, they are all called "Empress".